NSLocalizedString is not working for nsstring ios

Question

I have

NSString *str=@"some unknown value coming from server";
NSString *localizedVersion1 = NSLocalizedString(str, nil);
NSLog(@"localizedVersion1 %@",localizedVersion1);

Getting:

localizedVersion1 some unknown value coming from server .

It's not changing even when I am changing the device language.

Answer 1

You have misunderstood the purpose of NSLocalizedString, it is not a translation service but a lookup one. With this mechanism an app can contain multiple sets of (UI) strings which are selected based on the current language setting. All the strings must exist in advance.

You mention using Google Translate on the web. If you need a translation service then you can use the Google Translate API in your app to provide this. There are other translation services available - just google for them.

HTH